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经营范围
发明名称
Coupling network
摘要
申请公布号
US2301023(A)
申请公布日期
1942.11.03
申请号
US19410403959
申请日期
1941.07.25
申请人
BELL TELEPHONE LABORATORIES, INCORPORATED
发明人
DARLINGTON SIDNEY
分类号
H03H7/38
主分类号
H03H7/38
代理机构
代理人
主权项
地址
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